Răspuns :
Salut!
Răspuns: 143.75✅
[tex] \bf \: 12 {}^{2} - {0.5}^{2} = 144 - 0.25 = 143.75[/tex]
[tex]\it 12^2-0,5^2=(12-0,5)(12+0,5)=11,5\cdot12,5=143,75[/tex]
[tex] \bf \: 12 {}^{2} - {0.5}^{2} = 144 - 0.25 = 143.75[/tex]
[tex]\it 12^2-0,5^2=(12-0,5)(12+0,5)=11,5\cdot12,5=143,75[/tex]